HOLOSUN Micro Red Dot Optic (2 MOA),Black - HS403B

• New advanced technology LED allows up to 50, 000 hours of operation on one CR2032 battery
• Designed for day and night use
• 2 MOA on dot size
• Unlimited field of view
• Parallax-free with unlimited eye relief

Holosun paralow red dot sight, 2 moa dot, parallax-free, battery tray, hs403b.
50, 000 Hours of battery life (that's over 5 years of continuous use) motion
awake with 8 hour auto shutoff.